Choosing an Estimation Methodology for Natural Rubber Price Forecasting Models By AYE AYE KHIN, ZAINAL ABIDIN MOHAMED, MAD NASIR SHAMSUDIN, EDDIE CHIEW FOOK CHONG Institut Kajian Dasar Pertanian dan Makanan Universiti Putra Malaysia 43400 UPM Serdang, Selangor, Malaysia http://www.ikdpm.upm.edu.my January 2011